Behind all of the most popular modern approaches to happiness and success is the simple philosophy of focusing on things going right. But ever since the first philosophers of ancient Greece and Rome, a dissenting perspective has proposed the opposite: that it's our relentless effort to feel happy, or to achieve certain goals, that is precisely what makes us miserable and sabotages our plans. And that it is our constant quest to eliminate or to ignore the negative – insecurity, uncertainty, failure, sadness – that causes us to feel so insecure, anxious, uncertain or unhappy in the first place.

Yet this conclusion does not have to be depressing. Instead, it points to an alternative approach: a "negative path" to happiness that entails taking a radically different stance towards those things most of us spend our lives trying hard to avoid. This involves learning to enjoy uncertainty, embracing insecurity and becoming familiar with failure. In order to be truly happy, it turns out, we might actually need to be willing to experience more negative emotions – or, at the very least, to stop running quite so hard from them.